/**
* Retrieve an entry from the cache.
*
* <p>This LRU cache supports timeouts, so if the cached object has expired then we return null,
* just as if the entry wasn't found.
*/
@Override
public synchronized Object get(String key) {
Object value = null;
ExpiringCacheEntry entry = null;
synchronized (this) {
entry = (ExpiringCacheEntry) super.get(key);
}
if (entry != null) {
value = entry.getValue();
// if the value is null then that means this entry expired
if (value == null) {
log.debug("EXPIRED [" + key + "]");
hits--;
super.remove(key);
}
}
return value;
}
/**
* Store an entry in the cache.
*
* <p>We wrap the cached object in our ExpiringCacheEntry object so that we can track when the
* entry has expired.
*/
@Override
public synchronized void put(String key, Object value) {
ExpiringCacheEntry entry = new ExpiringCacheEntry(value, this.timeout);
super.put(key, entry);
}
